[Steely Tom]

After watching the explosion several times, I believe this is a shaped charge. Shock-wave pattern is asymmetric.

It looks like they targeted a police station. Watch closely and you can see that the building is basically obliterated.

Also, note how shockwave damages vehicles moving along the road at top of frame. Pieces of the vehicle at the left are knocked off, but it keeps moving. The vehicle closer to the explosion is disabled.

The headquarters building appears to shield the individuals who are running across the field, but the men who hunkered down behind the headquarters probably didn't fare so well.

[BenLurkin]

Isn’t this terrorist propaganda?

[wrench]

With the secondary explosion at the building, looks like some form of recoilless artillery round.

[NativeSon]

I took a look but I'm not seeing an asymmetrical shockwave. It rolls out evenly, things seem to pop-off in the distance. The target building received a lot of force - close to the origin and a large surface to catch it.

Not my field of study but chemically, it looks as though high pressure was reached very quickly, makes it look like before the explosion. I forget the terminology but "detonation" would be one of the labels. A lot of heat energy goes straight up like any old explosion - least resistance. The compression wave is caused by the rapid decomposition of fuel/oxidizer/gases and if "shaped" would be carried through the remainder of the event

I'd take a bet that these turds got a live round/warhead and cooked it off manually.